Washboiler with furnace



June 15 1926. H. BAcHRAcH WASHBOILER WITH FURNACE Filed Dec. 1 6, 1924 Patented June 15, 1926.

UNITED STATES HEINRICH BACHRACH, OF CASSEL, GERMANY.

WASHBOILER WITH FURNACE.

Application filed December 16,

Wash boilers with cross-shaped agitating body and with furnaces are known. In wash boilers of this type the driving mechanism must be arranged at the upper end of the shaft, viz, in the lid of the boiler whereby the weight of the lid is considerably increased. WVhen the shaft is driven from below the work is much easier and the wash is treated with greater care than when the shaft is driven from above. It has already been proposed to arrange the driving mechanism for wash boilers below the boiler in which the wash water is boiled by means of steam heating. In wash boilers of this type an upper bearing outside the boiler is required for the shaft. Steam heating is too expensive for households. Wash boilers are further known in which a wash board floating on the Water has a central tube guided by means of a shaft. The main drive of a wash boiler of this type is arranged on the cover wherefrom results the inconvenience mentioned above. Vash boilers with furnace and driving mechanism under the boiler were however not known prior to the present invention.

According to the invention the driving shaft is mounted under the boiler in the Water discharge pipe which traverses the furnace. The driving mechanism for the shaft is arranged under the boiler. The water discharge pipe is double-walled and the water circulates through the space enclosed between the two walls, the inner space being reserved for the shaft. A branch tube at the lower end of the water pipe serves as the discharge pipe.

In the accompanying drawing a wash boiler with driving mechanism below the boiler is shown by way of example in elevation, partly in section.

The wash boiler 1 has a furnace 2 for any kind of fuel. The driving mechanism 3 for the vertical driving shaft 4 is arranged below the furnace. The driving mechanism 3 may be driven in any convenient manner, for instance by means of'a hand-operated lever 1924, Serial No. 756,263, and in Germany July 24, 1924.

5, or by mechanical power. The driving element for shaft 4 is a bevel wheel 3 as shown, but any other suitable means may be used. The driving shaft 4 is enclosed in a water jacket 6 which consists of a double-Walled. pipe 7, 8 which traverses the furnace and is closed at the lower. end below the furnace. A discharge pipe 9 is branched from the lower end of the Water jacket. In the inner tubular space of the double-walled pipe 7 8 the vertical driving shaft 4 is located. The

upper end of the outer pipe 8 is fixed on the bottom plate of the boiler and the upper part of the inner pipe 7 projects upwardly from the bottom plate of the boiler up to the upper end of the shaft 4. The upper end of pipe 8 is preferably. fixed by means of a flanged nut.

The shaft 4 carries crosswise arranged agitator arms 11.

The constructional details described above are given merely by way of example but they are not intended to limit the invention which consists essentially in arranging the driving mechanism for the vertical shaft of the agitating arms below the furnace and in mounting this shaft in a water jacket.

As the water from the boiler circulates through the water jacket 7, 8 the heating of the water is considerably accelerated.

I claim In a washing machine, a wash boiler, a furnace therebelow and upon which said wash boiler is mounted, a double-walled water pipe extending downward from the bottom plate of ,the boiler and traversing said furnace, an annular disk closing the lower end of the outer annular space of said double-walled pipe to form a water jacket, an agitating cross in the boiler, a vertical shaft for driving said agitating cross, a driving mechanism below the furnace connected with the lower end of said vertical shaft, and a discharge tube connected with the lower end of said double-walled pipe.

In testimony whereof I aflix my signature.

HEINRICH BACHRACI-I. 

